Data Set Citation:
When using this data, please cite the data package:
Henschke N , Suthers I , Baird M , and Everett J.
Salp Counts, Tasman Sea off South Eastern NSW (Australia), 2008
klr.25.6 (https://knb.ecoinformatics.org:443/knb/metacat/klr.25.6/nceas)
General Information:
Title:Salp Counts, Tasman Sea off South Eastern NSW (Australia), 2008
Identifier:klr.25
Abstract:
Swarms of the salp, Thalia democratica, periodically occur off southeast Australia following the austral spring bloom of phytoplankton. This study aimed to determine the abundance and size/stage distribution of T. democratica and their relationship with copepods in three water types of the western Tasman Sea. Samples were taken from vertical net hauls along four cross-shelf transects spaced along 200 km of the New South Wales coast, from the East Australian Current (EAC) separation zone, around 32.5ºS to off Sydney (34ºS). Temperature-salinity signatures grouped stations into three distinct water types: inner shelf water, EAC, and upwelled water. Although common across all stations, T. democratica was significantly more abundant within inner shelf waters compared to both EAC and upwelled water. Analysis of population structure (aggregate buds, aggregate females, aggregate males, immature solitaries and mature solitaries) also identified higher proportions of reproductive aggregates and their offspring in inner shelf water. This salp population structure was significantly different in the EAC regions, characterised by a paucity of the solitary stages, higher temperatures and lower chlorophyll a concentrations. A weak negative correlation was identified between T. democratica and copepod abundance. In this study, the maximum abundance of T. democratica was twice the highest global recorded abundance and tenfold greater than maximum abundances sampled from the continental shelf and slope waters off southeast Australia during 1938-42.
Keywords:
  • Jellyfish, Tasman Sea, Australia, plankton net, Salp, Thalia democtratica
Data Table, Image, and Other Data Details:
Metadata download: Ecological Metadata Language (EML) File
Data Table:JEDI Template.txt ( View Metadata )

Involved Parties

Data Set Creators:
Individual: Natasha Henschke
Organization:School of Biological, Earth, and Environmental Sciences, University of New South Wales
Position:PhD Student
Address:
Sydney, New South Wales 2052 Australia
Email Address:
Natasha.Henschke@unsw.edu.au
Individual:Dr. Iain Suthers
Organization:University of New South Wales
Position:Professor
Address:
Sydney, Australia
Phone:
+61 2 9385-2065 (voice)
Email Address:
i.suthersunsw.edu.au
Individual:Dr. Mark E. Baird
Organization:Climate Change Cluster
Position:Senior Research Fellow
Address:
University of Technology,
PO Box 123,
Broadway, New South Wales 2007 Australia
Email Address:
Mark.Baird@uts.edu.au
Individual:Dr. Jason Everett
Organization:School of Biological Earth and Environmental Science, University of New South Wales
Position:Postdoctoral Researcher
Address:
Sydney, New South Wales 2052 Australia
Phone:
+612 9385 2073 (voice)
Phone:
+612 9385 1558 (fax)
Email Address:
Jason.Everett@unsw.edu.au
Data Set Contacts:
Individual:Dr. Iain Suthers
Organization:University of New South Wales
Position:Professor
Address:
Sydney, Australia
Phone:
+61 2 9385-2065 (voice)
Email Address:
i.suthersunsw.edu.au
Associated Parties:
Individual: Kelly Robinson
Organization:Dauphin Island Sea Lab
Position:PhD Candidate
Address:
101 Bienville Blvd.,
Dauphin Island, Alabama 36528 USA
Phone:
251-861-2141 x2289 (voice)
Email Address:
krobinson@disl.org
Individual:Dr. William 'Monty' Graham
Organization:Dauphin Island Sea Lab
Position:Senior Marine Scientist
Address:
101 Bienville Blvd.,
Dauphin Island, Alabama 36528 USA
Phone:
251-861-2141 ext. 2272 (voice)
Email Address:
mgraham@disl.org
Individual:Dr. Carlos Duarte
Organization:Instituto Mediterráneo de Estudios Avanzados
Position:Profesor de investigación
Address:
C/ Miquel Marquès, 21,
07190 Esporles,
Islas Baleares, Spain
Phone:
+34 971611725 (voice)
Email Address:
carlosduarte@imedea.uib-csic
Individual:Dr. Robert Condon
Organization:Dauphin Island Sea Lab
Position:Research Faculty
Address:
101 Bienville Blvd.,
Dauphin Island, Alabama 36528 USA
Phone:
251-861-2141 x7546 (voice)
Email Address:
rcondon@disl.org

Data Set Characteristics

Geographic Region:
Geographic Description:Tasman Sea
Bounding Coordinates:
West:  156.75  degrees
East:  172.75  degrees
North:  -31.375  degrees
South:  -45.0  degrees
Time Period:
Begin:
2008-10-12
End:
2008-10-18
Taxonomic Range:
Classification:
Rank Name:Phylum
Rank Value:Chordata
Classification:
Rank Name:Class
Rank Value:Thaliacea
Classification:
Rank Name:Order
Rank Value:Salpida
Classification:
Rank Name:Family
Rank Value:Salpidae
Classification:
Rank Name:Genus
Rank Value:Thalia
Classification:
Rank Name:Species
Rank Value:democratica

Sampling, Processing and Quality Control Methods

Step by Step Procedures
Step 1:  
Description:

Plankton Net

Plankton net: vertical hauls using a N70 net with opening of 0.7m (redesigned based on Kemp and Hardy, 1929). Net was dropped to 50m and towed to the surface at 1 ms-1. Two net hauls were made at each station (total of 39 stations). Fixed immediately in 5 % formaldehyde in seawater. Two 1 ml subsamples were taken for counts with a minimum of 100 zooplankton individuals counted. Extra subsamples were taken if necessary. N=2 for each net haul, N=4 for each CTD station

Data Set Usage Rights

Usage restricted to Global Jellies Working Group members.
Access Control:
Auth System:knb
Order:denyFirst
Additional Metadata
Additional Metadata
Additional Metadata
Additional Metadata
Additional Metadata
Metadata download: Ecological Metadata Language (EML) File